Pith Number

pith:25ETQYCM

pith:2019:25ETQYCMPUIC2MGTUVCN5OMXBZ

not attested not anchored not stored refs pending

SUGAR: An improved empirical model of Type Ia Supernovae based on spectral features

A. Kim, B. Hayden, C. Aragon, C. Baltay, C. Buton, C. Saunders, C. Sofiatti, C. Tao, D. Fouchez, D. Kuesters, D. Rabinowitz, D. Rubin, E. Gangler, E. Pecontal, F. Mondon, G. Aldering, G. Smadja, J. Nordin, K. Barbary, K. Boone, K. Runge, L.-P. Says, M. Kowalski, M. Rigault, M. V. Pruzhinskaya, N. Chotard, N. Suzuki, P. Antilogus, P. Fagrelius, P.-F. L\'eget, Q. Lin, R. C. Thomas, R. Pain, R. Pereira, S. Bailey, S. Bongard, S. Dixon, S. Lombardo, S. Perlmutter, S. Taubenberger, U. Feindt, W. Hillebrandt, Y. Copin

arxiv:1909.11239 v1 · 2019-09-25 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{25ETQYCMPUIC2MGTUVCN5OMXBZ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T00:57:09.389490Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d74938604c7d102d30d3a544deb9970e5e31a034acffdb8d149461bf162c56e0

Aliases

arxiv: 1909.11239 · arxiv_version: 1909.11239v1 · doi: 10.48550/arxiv.1909.11239 · pith_short_12: 25ETQYCMPUIC · pith_short_16: 25ETQYCMPUIC2MGT · pith_short_8: 25ETQYCM

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/25ETQYCMPUIC2MGTUVCN5OMXBZ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: d74938604c7d102d30d3a544deb9970e5e31a034acffdb8d149461bf162c56e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a62ef47619305624cdc866e4832bf46b6074b92ab95007bd80d48ebec3239cef",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2019-09-25T00:13:25Z",
    "title_canon_sha256": "6838a91586f8baa6aaa793e16b112563d1176a825972902385b3609ae54ca291"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.11239",
    "kind": "arxiv",
    "version": 1
  }
}